_______ buy your ticket from a ticket machine. There are lots of people there.
| A．Not | B．Not to | C．Don’t | D．Don’t to |
–May I use your MP4 today, Paul? --_______. I will not use it.
| A．No, you can’t. | B．I’ve no idea. |
| C．Sure, go ahead. | D．Not at all |
I will try my best to stop my son from _____ the same mistake.
| A．make | B．made | C．makes | D．making |
–_____ did you work out the problem in such a short time? --With Mr. Li’s help.
| A．When | B．Where | C．How | D．Which |
They walked home last night because they couldn’t _____ to take a taxi.
| A．leave | B．buy | C．afford | D．allow |
–Why didn’t you buy any bread? --Sorry, I _____.
| A．forget | B．forgot | C．remember | D．remembered |